/* ===================================
   Sichuan Xingyu Xingchen - Global Styles
   Corporate Website for European & American Markets
   ==================================== */

/* CSS Variables */
:root {
    --primary-color: #1a1a1a;
    --secondary-color: #0066cc;
    --accent-color: #ff6b35;
    --light-bg: #f5f5f5;
    --white: #ffffff;
    --text-color: #333333;
    --text-light: #666666;
    --border-color: #dddddd;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
    --transition-smooth: all 0.3s ease-in-out;
}

/* ===================================
   1. Reset & Base Styles
   ==================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ===================================
   2. Typography
   ==================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition-smooth);
}

a:hover {
    color: var(--accent-color);
}

/* ===================================
   3. Navigation Bar
   ==================================== */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 0 2rem;
    animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

nav .container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.logo svg {
    width: 40px;
    height: 40px;
    animation: logoRotate 0.8s ease-out;
}

@keyframes logoRotate {
    from {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    to {
        transform: scale(1) rotate(0);
        opacity: 1;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    font-size: 0.95rem;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -5px;
    left: 0;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a.active {
    color: var(--secondary-color);
}

.nav-menu a.active::after {
    width: 100%;
}

.nav-button {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.nav-button:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

/* ===================================
   4. Hero Section
   ==================================== */

.hero {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
    background: linear-gradient(135deg, var(--primary-color) 0%, #2a2a2a 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    opacity: 0.05;
    animation: float 20s infinite ease-in-out;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 500px;
    height: 500px;
    background-color: var(--accent-color);
    border-radius: 50%;
    opacity: 0.03;
    animation: float 25s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(50px);
    }
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero h1 {
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-block;
    font-size: 1rem;
    text-align: center;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

.hero-visual {
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-visual svg {
    width: 100%;
    max-width: 500px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ===================================
   5. Container & Layout
   ==================================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 2rem;
}

/* ===================================
   6. Features Section
   ==================================== */

.features-section {
    background-color: var(--light-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition-smooth);
    animation: fadeInUp 0.8s ease-out both;
    cursor: pointer;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-top: 4px solid var(--secondary-color);
}

.feature-card svg {
    width: 50px;
    height: 50px;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.feature-card h3 {
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.95rem;
}

/* ===================================
   7. Services Section
   ==================================== */

.services-section {
    background-color: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-item {
    padding: 2.5rem;
    background: linear-gradient(135deg, var(--light-bg) 0%, var(--white) 100%);
    border-left: 4px solid var(--secondary-color);
    border-radius: 8px;
    transition: var(--transition-smooth);
    animation: fadeInUp 0.8s ease-out both;
}

.service-item:nth-child(1) { animation-delay: 0.1s; }
.service-item:nth-child(2) { animation-delay: 0.2s; }
.service-item:nth-child(3) { animation-delay: 0.3s; }
.service-item:nth-child(4) { animation-delay: 0.4s; }
.service-item:nth-child(5) { animation-delay: 0.5s; }
.service-item:nth-child(6) { animation-delay: 0.6s; }

.service-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--accent-color);
}

.service-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.service-item p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===================================
   8. Mobile Application Section
   ==================================== */

.mobile-app-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2a2a2a 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.mobile-app-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    opacity: 0.05;
}

.mobile-app-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.mobile-app-content h2 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.mobile-app-content p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

.app-stores {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.app-store-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--white);
    color: var(--primary-color);
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition-smooth);
    font-size: 0.9rem;
}

.app-store-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2);
    background-color: var(--accent-color);
    color: var(--white);
}

.app-store-btn svg {
    width: 20px;
    height: 20px;
}

.mobile-mockup {
    animation: floatDevice 3s ease-in-out infinite;
}

@keyframes floatDevice {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(20px);
    }
}

.mobile-mockup svg {
    width: 100%;
    max-width: 350px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
}

/* ===================================
   9. Contact Section
   ==================================== */

.contact-section {
    background-color: var(--light-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
    align-items: center;
}

.contact-info {
    animation: slideInLeft 0.8s ease-out;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--white);
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.contact-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.contact-item svg {
    width: 40px;
    height: 40px;
    min-width: 40px;
    color: var(--secondary-color);
}

.contact-detail h4 {
    margin-bottom: 0.25rem;
}

.contact-detail p {
    font-size: 0.95rem;
    margin: 0;
}

.contact-form {
    animation: slideInRight 0.8s ease-out;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

input[type="text"],
input[type="email"],
input[type="phone"],
textarea {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="phone"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--secondary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.submit-btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 107, 53, 0.3);
}

/* ===================================
   10. Footer
   ==================================== */

footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 2rem 2rem 0.75rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.35rem;
}

.footer-section ul a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    transition: var(--transition-smooth);
    line-height: 1.4;
}

.footer-section ul a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.25rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    margin: 0;
    line-height: 1.4;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.social-links a:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

.social-links svg {
    width: 16px;
    height: 16px;
    color: var(--white);
}

.policy-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.policy-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
    transition: var(--transition-smooth);
}

.policy-links a:hover {
    color: var(--accent-color);
}

/* ===================================
   11. Blog/News Section
   ==================================== */

.blog-section {
    background-color: var(--white);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.blog-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition-smooth);
    animation: fadeInUp 0.8s ease-out both;
    cursor: pointer;
}

.blog-card:nth-child(1) { animation-delay: 0.1s; }
.blog-card:nth-child(2) { animation-delay: 0.2s; }
.blog-card:nth-child(3) { animation-delay: 0.3s; }

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.blog-thumbnail {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.blog-thumbnail svg {
    width: 60%;
    height: 60%;
    opacity: 0.1;
}

.blog-content {
    padding: 1.5rem;
}

.blog-date {
    color: var(--secondary-color);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.blog-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.blog-card p {
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.read-more {
    color: var(--secondary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
}

.read-more:hover {
    gap: 1rem;
    color: var(--accent-color);
}

.read-more::after {
    content: '→';
}

/* ===================================
   12. Culture Section
   ==================================== */

.culture-section {
    background: linear-gradient(135deg, var(--light-bg) 0%, var(--white) 100%);
}

.culture-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.value-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition-smooth);
    animation: fadeInUp 0.8s ease-out both;
}

.value-card:nth-child(1) { animation-delay: 0.1s; }
.value-card:nth-child(2) { animation-delay: 0.2s; }
.value-card:nth-child(3) { animation-delay: 0.3s; }
.value-card:nth-child(4) { animation-delay: 0.4s; }

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.value-icon {
    width: 80px;
    height: 80px;
    background-color: var(--light-bg);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.value-card:hover .value-icon {
    background-color: var(--secondary-color);
}

.value-icon svg {
    width: 40px;
    height: 40px;
    color: var(--secondary-color);
    transition: var(--transition-smooth);
}

.value-card:hover .value-icon svg {
    color: var(--white);
}

.value-card h3 {
    margin-bottom: 0.75rem;
}

/* ===================================
   13. Call to Action Section
   ==================================== */

.cta-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #004fa3 100%);
    color: var(--white);
    text-align: center;
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 500px;
    height: 500px;
    background-color: var(--accent-color);
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    animation: fadeInUp 0.8s ease-out;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ===================================
   14. Responsive Design
   ==================================== */

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.4rem; }

    nav .container {
        flex-wrap: wrap;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        gap: 0;
        padding: 2rem 0;
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu a::after {
        display: none;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-visual {
        order: -1;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .mobile-app-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    section {
        padding: 3rem 1rem;
    }

    .features-grid,
    .services-grid,
    .blog-grid,
    .culture-values {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.4rem; }

    .nav-menu {
        gap: 0;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .app-stores {
        flex-direction: column;
    }

    .app-store-btn {
        width: 100%;
        justify-content: center;
    }

    .policy-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ===================================
   15. Utility Classes
   ==================================== */

.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.hidden {
    display: none;
}

.visible {
    display: block;
}

/* ===================================
   16. Page-Specific Styles
   ==================================== */

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2a2a2a 100%);
    color: var(--white);
    padding: 4rem 2rem;
    text-align: center;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    opacity: 0.05;
}

.page-header h1 {
    color: var(--white);
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a:hover {
    color: var(--accent-color);
}

.breadcrumb-separator {
    margin: 0 0.5rem;
}

/* ===================================
   17. Loading Animation
   ==================================== */

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 102, 204, 0.3);
    border-top-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===================================
   18. Scroll Animations
   ==================================== */

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.slide-in {
    animation: slideIn 0.8s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}